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(No Model.) 7

0. A. NEEDHAM.

PHOTOGRAPHIG PRINTING FRAME.

No. 306,636. PatentedOot. 14, 18841.

I UNITED STATES PATENT OFFICE.

CHARLES A. NEEDHAM, OF NEW YORK, N. Y., ASSIGNOR TO E. P. NEEDHAM & SON,OF SAME PLACE.

PHOTOGRAPHlC-PRINTING FRAME.

$PECIFICATION forming part-of Letters Patent No. 306,636, dated Qctober14, 1884.

' Application filed April 14, 1884. (No model.)

To all whom it may concern:

Be it known that I, Cnnnnns A. NEEDHAM, of New York, in the county ofNew York and State of New York, have invented a certain new and usefulImprovement in Photographic- Printing Frames, of which the following isa specification.

My improvement relates to the printingframes used by photographers forclamping sensitized paper and a negative together for exposure to therays of the sun. The backs of the printingframes are usually made in twosections, to facilitate examination of the prints during exposurewithout shifting them. The backs of the printing-frames are usuallycovered with canton-flannel or like material on the surface which comesin contact with the sensitized paper. At the meeting edges of thesections this material is liable to become loosened or detached, andwhen this happens a rib or ridge is formed, and the back is no longeruseful while in that condition. This 1 is a source of constantannoyance.

The object of my improvement is to obviate the trouble which is incidentto the use of the backs as ordinarily constructed. To this end theimprovement consists in the combination, with a back of a printing-framemade of sections hinged together, of a covering applied to the same andturned over and secured to the meeting edges of the sect-ions. Theaction of the meeting edges during the operation of the sections of theback then tends to tighten and secure the covering material ,rather'than to loosen it.

In the accompanying drawings, Figure 1 is a perspective view of aprinting-frame embodying my improvement, and Fig. 2 is a longitudinalsection of the back of the frame.

' Similar letters of reference designate correo sponding parts in bothfigures.

A designates the frame proper. The negative is inserted in this framewith the film side uppermost. 4 The sensitized paper is then laid uponthe negative, and the back Bis then laid 4 5 upon the sensitized paper.The back B is made in sections hinged together at the meeting edges inany suitable manner. As shown, the sections are connected by hinges a atthe upper side. On the under side, or, in other words, the side which.comes next the sensitized paper, the back is covered with canton-flannelor analogous materiahb. The meeting edges of the sections have thismaterial turned over them, as shown at c c. The said material may besecured in place by glue or other adhesive material.

The back may be secured, when in place, by resilient crossbars orspring-strips O, pivotally connected at about the middle to the sectionsof the back, and adapted to be engaged at the ends with catches (Z onthe frame A.

The exposure may be effected as usual.

What I claim as my invention, and desire tosecure by Letters Patent, is-

The combination, with the back of a printing-frame made of two.sections, and having ahinge-connection at one side, of a coveringapplied to each of said sections and turned over the meeting edges ofsaid sections and secured thereto by glue or other adhesive ma terial,substantially as and for the purpose set forth.

CHAS. A. NEEDHAM.

Witnesses:

T. J. KEANE, E. T. ROCHE.

